Mengyang Li, Tingfen Cao, Xiaodong Yuan, Jinli Zhang, Changchun Liu, Congzhi Yi, Haiping Chen, Xusong Quan. Effect of Reference Surface Error on Subaperture Stitching for Flat Optics[J]. Chinese Journal of Lasers, 2019, 46(12): 1204006
- Chinese Journal of Lasers
- Vol. 46, Issue 12, 1204006 (2019)
Fig. 1. Positions and correlation errors of subapertures. (a) Position distributions of subapertures and full aperture; (b) subapertures with relative tilt and translation error
Fig. 2. Simulation of defocusing errors of subaperture. (a) Defocusing error of reference surface; (b) accumulated error of reference surface; (c) difference between accumulated errors of subapertures 4 and 5
Fig. 3. Simulation of astigmatic errors of subaperture. (a) Astigmatism error of reference surface; (b) accumulated error of reference surface; (c) difference between accumulated errors of subapertures 4 and 5
Fig. 4. Simulation of higher-order errors of subaperture. (a) Coma error of reference surface; (b) stitching error of reference surface; (c) difference between stitching errors of subapertures 4 and 5
Fig. 5. Results of difference among 3 sets of subaperture stitching errors after removing tilt. (a) Subapertures 1 and 8; (b) subapertures 2 and 6; (c) subapertures 3 and 9
Fig. 6. Simulation of reference surface error correction. (a) Test surface; (b) test surface after stitching; (c) test surface corrected by algorithm; (d) reference surface error; (e) stitching error; (f) corrected error
Fig. 7. Zernike coefficients corresponding to stitching and corrected errors
Fig. 8. Experiment results of reference surface error correction. (a) Reference surface error; (b) stitching result; (c) stitching result after removing Z2-Z6 items; (d) corrected result of stitching error; (e) stitching result after removing reference surface error
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Table 1. Comparision of RMS of refernce surface error and stitching error
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Table 2. Relationship between stitching error resulted from higher-order error of reference surface and overlapping ratio
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